diff options
Diffstat (limited to 'arch/ia64/kernel/signal.c')
| -rw-r--r-- | arch/ia64/kernel/signal.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 499b7e5317c..b8a0a7d257a 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -94,7 +94,7 @@ sys_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, long arg2, static long restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) { - unsigned long ip, flags, nat, um, cfm; + unsigned long ip, flags, nat, um, cfm, rsc; long err; /* Always make any pending restarted system calls return -EINTR */ @@ -106,7 +106,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) err |= __get_user(ip, &sc->sc_ip); /* instruction pointer */ err |= __get_user(cfm, &sc->sc_cfm); err |= __get_user(um, &sc->sc_um); /* user mask */ - err |= __get_user(scr->pt.ar_rsc, &sc->sc_ar_rsc); + err |= __get_user(rsc, &sc->sc_ar_rsc); err |= __get_user(scr->pt.ar_unat, &sc->sc_ar_unat); err |= __get_user(scr->pt.ar_fpsr, &sc->sc_ar_fpsr); err |= __get_user(scr->pt.ar_pfs, &sc->sc_ar_pfs); @@ -119,6 +119,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) err |= __copy_from_user(&scr->pt.r15, &sc->sc_gr[15], 8); /* r15 */ scr->pt.cr_ifs = cfm | (1UL << 63); + scr->pt.ar_rsc = rsc | (3 << 2); /* force PL3 */ /* establish new instruction pointer: */ scr->pt.cr_iip = ip & ~0x3UL; @@ -142,6 +143,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) __copy_from_user(current->thread.fph, &sc->sc_fr[32], 96*16); psr->mfh = 0; /* drop signal handler's fph contents... */ + preempt_disable(); if (psr->dfh) ia64_drop_fpu(current); else { @@ -149,6 +151,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) __ia64_load_fpu(current->thread.fph); ia64_set_local_fpu_owner(current); } + preempt_enable(); } return err; } |